no injection of @Resource TimerService within Entity EJB

[jmcclure]

Greetings,

I'm working with 4.0.4GA and EJB3 RC9 on Java 1.5.0_06 (WinXP). Have created an entity bean with the container's timer service injected. When I reference the timer service, it is null. Under the same conditions, I am successful at injecting the timer service into both a MDB and a stateless session bean. No errors or warnings in compile or deployment with verbose output, only the NullPointerException when attempting to use the timer service.
Here is what I am doing (simplified):

@Entity
public class MyEntity implements Serializable
{
 @Resource
 private TimerService timerService;
 ...

Then try to invoke methods on the timer service:

public createMyTimer()
{
 try
 {
 if((timerService.getTimers()).isEmpty() == false)
 {
 ...

I assume this annotation/usage is legal. Did not see anything logged in JIRA or a relate forum topic. Anyone seen this or have an answer to this behavior? Thanks.

James

[jmcclure]

Still can find no reference to issues with timer service injection in an entity bean. Opened feature request in JIRA:

http://jira.jboss.com/jira/browse/EJBTHREE-726

[bill.burke]

JPA entity beans (@Entity) do not support injection.

Old style EJB 2.1 CMP/BMP do support injection, but JBoss does not support it at this time.

[bill.burke]

What I should say is that Java Persistence (ejb 3.0 persistence with @Entity) specification does not allow injection.

[jmcclure]

I appreciate the clarification Bill.

Guess I should pay more attention to the use of terms enterprise beans (session, message) vs. JPA entity beans in EJB 3. I was looking to experiment with timers are associated with a particular bean instance rather than type of bean.